cartwright454

It has been a while but I think with a flat top 2 notch piston and .014 deck with 60cc heads the compression should be about 12.5 static? I have had a 8" cone 5600 converter, a 10" art car 4300, and now a 10" redneck that I had built for the car 5100, cheep but it has the best short time and the best mph with the redneck. stall is on the trans brake. I have had the timming at 32,34,36,38,40,42.

Thanks BillC

hammertime

Find a good 8" and toss that 10" no doubt its slowing you down.

Putting a car on the transbrake and checking the stall is not the way to check the stall nor is it the true stall. In order to find the true stall you will need to find what we call launch fallback stall and after shift recovery stall these 2 will be different and typically the fall back stall is the one you want to nail RPM wise. I can tell you your fall back is prob far from 5100


You are right on it should run mid 10's ..

cartwright454

The converter was made for the car and the motor. I hade a $1200 8" cone in it that was for my buddys car same motor #200 more (he runs low 10's). it was the slowest of all. all of the converters were from 11.18 to 11.38. 118 to 126 mph. the cam pulls from 4000 to 8000. the converter I have should be right on. I just know it should run much faster with the combo I havce now.

So every one so far thinks it is not the heads???

Thanks Bill C

hammertime

Not heads at all... you have other issues somewhere that gear still is killing it, 10" is not right for it unless its street driving also ? The 8" made for a low 10 second car should be wayy tight for a 1120 car, we have cars going 1.70's running high 12's most your issue is in the first 60ft .. hence the converter/gear issues I keep speaking of. You have far from enough motor for the 10" in a all drag race purpose

cartwright454

yes it is driven on the street . If the converter was to tite wouldnt it mph about 130+ and the best short time and mph i have goten was with the 10" . I calculated the gears at 3.73 with the 26" tire. the gear should be the same as a 32" with 4.56. I will try a 4.10 gear next year. I have built this car very close to a buddys car every thing the same but he has a set of sportsman heads same cam same motor. he has a 4.00 gear and a 28" tire. he runs consistent low 10's. I still think it should run in the 10's with this combo. Maybe I am just spoiled with BBC'S . I had a 427 with old out of the box dart heads that ran 8.06@170 in my #2000 altered with 4.10 gears and a 33"tire. Thanks agin for all the ideas. Keep them coming. thanks bill c

jmarksdragster

Sounds like a lot of mismatched parts and/or multiple issues, not just one thing. 10 years ago my Dads 2700 lb Malibu ran a 9.80's @ mid 130's with a 406, Pontiac 867 heads, bowtie intake with an adaptor and a Dominator, the same cam you run, 32" tires with a 4.30 gear, 8" 5500 stall. He ran 11.30's with a dish piston 406 on pump gas, 461 heads, and a FT cam in a 3100 lb Camaro.

Your 1.7 short time is a killer, something going on with traction that you may not realize. I would have someone take some video's.

hammertime

That explains the 10" then, actually a looser converter will MPH more then a tight converter. I think if you find the 60ft your et will come .. like said above maybe a video camera is in need.

cartwright454

It hooks very well never has spun the tires even with the other converters. also this combo was a long time project that is identical to my budys but I have more compression and maybe to much head and I have more converter?? HIs runs low 10,s in any weather and drives it on the street. I am going to try a lower gear but I dont think it will help much. thanks bill c

hammertime

His combo has hit the sweet spot and yours has not, prob a few offs causing a big off. I know several people who have used them heads with good luck. Have you done a leak down or compression check to make sure all is well in the motor itself ? 1.70 still keeps coming back to a traction issues, conv, gear issue

cartwright454

Yes I have done a comp. test. All of the cylinders are 190 to 195 (I have a cheep allstar mini starter or it would be over well over 200psi).

I have watched videos of the car and it will pick the tires up 3" , then drop them quick, then it looks like i could run faster to 60'. tires wrinkle nice, not wad them up.

At least my question was answered about the heads. I will keep looking. May be MSD box, I have a old Holley billet distributor (inside the same as msd) could be that. I will have to figure out how to test them. May be fuel?

Thanks for the help BillyC